Metallic table top with closed chambers



N H o J4 T. E

METLLC TABLE TOP WITH CLOSED GHBERS 2 shams-sheet 2 Filed June 29, 1939 `Patented Mar. 25, 194i cial-,883

* PATENT OFFICE i cassini:` f

METALLIC 'rms Tor wrm cLosEn cnAnmEns Edward .'i. Joiznn, Minneapolis, Minn., assignor to mpany, Minneapolis, Minn., a corporation of Minnesota Application June 29, 1939, Serial No.v 281,834

2 Claims.

My` present invention provides an improved metallic -top for ironing tables and generally statedV consists of the novel devices, combination of devices and arrangement of parts hereinafter deo scribed and defined in the claims.

The object of the present invention is to proattachment of supporting legs, transverse anchoring bars or plates are rigidly applied. by electric welding or riveting, in such a manner that they 20 additionally reinforce the table top.

The invention is illustrated in the accompanyiig drawings wherein like characters indicate liire parts throughout the several views.

Referring to the drawings:

Fig. iis a perspective showing the table top applied es the top of an ironing table, looking at .the device from the underside of the board Fig. 2 is a transverse section taken'on-the line 2-2 of Fig. 1, some parts being broken away;I

Fig. 3 is a transverse section taken through the table top on the line 3--3 of Fig. 1, some parts being broken away;

Fig. i is o. bottom plan view ofthe with the supporting legs removed;

Figs. 5 and 6 are Vdetailed views in perspective table top showing the transverse anchoring bars or plates removed from the table top; and

. Figs.. 'I' and 8 are fragmentary details in end elevation illustrating a modified way of bending 40 the body sheet of the table top to provide the reinforcing ribs.

'A preferred form of 'the invention is illustrated in Figs. 1 to 6 inclusive. In |this structure the steel or metallic sheet III of the table 'top is bent 45 at its outer edge to form upturned U-shaped Y iianges II and at its intermediate portion is bent to form rei-niorcing ribs I2 that are approximately il-shaped or triangular in cross section, but preferably' ilattened at I3 and spot welded at I t. These il-shaped ribs l2 in depth represent the entire thickness of the board. I

To reinforce the edge of the table top. flat thin metal strips i5 are incorporated in the rim thereci by means of'thin metal binding strips it that tt are bent to embrace the said strip, it and to interlap with the U-shaped marginal iianges III. as best shown in Eig. 2. Between certain of the ribs I2. sheet metal reinforcing channels 'Il are applied and connected to the said ribs preferably by spot welding the contacting surfaces.

For the application of supporting legs channel` shaped anchoring bars or plates-I8 and I9, shown in detail in Figs. 5 and 6 respectively, are provided, These members 4I8 and I@ are stamped from quite thin sheet steel placed in contact with the boards of the ribs I2 and spot welded thereto by beingfprovided at their ends respectively with 'ange extensions Il' and I8'. These extensions I8' and I9' are rigidly secured to the rim por-non or the board `prefefrcmy by small nut equipped bolts 2l, best shown in Fig. 3.

Thin sheet anchoring plate 2l is spot welded-to the 'iianges .I2 and is provided with hinge lugs 22 and with'a retractible latch bolt 23. The anchoring bar Il is provided with outstanding hinge lugs 2|, and lthe anchoring bar I9 is provided with hinge lugs and 2B.

The supporting leg structure may be of any approved form but as shown the rear legs 2l are pivoted to the hinge lugs 25; and the prongs of 25 the oblique leg 28 aire pivoted to the hinge lugs 24. The numeral 29 indicates a rear leg brace that is connected to a link 30 which latter is pivoted to the lugs 2B and at its free end is adapted to be detachably held by the retractible 30 latch bolt 23. The numeral 3| indicates spreader links pivoted to the rear legsand to the hinge lugs 26.

2l' indicates a front leg brace that connects the front end of the leg 28 to the rear legs.

The metallic parts of the metallic' sheet and metallic rims are preferably spot welded or electrically welded at all contacting edges or places.

The metallic table top described is not only comparatively light and very strong but may be 40 made at very reasonable cost inasmuch |as the metallic elements thereof may -be produced by the rolling process.

Electric heating meansmay be applied thereto either by placing the heat-ing elements i-n the channels'of the V-shaped or tubular grooves or in the spaces between the rim and channels, in which latter case the spaces would be closed by a suitable covering. Alt any rate, it will be common practice to cover such ironing boards with 5o heavy ilabric or cloth.` lifter the 'table top has been fabricated or produced as shown. i-t will'be .the advisable practice to dip the same in a lacquer which will seal joints and produce a good surface. c5

In Fig. 2 I have illustrated one manner in which electric heating elements if, which may be or any suitable construction and arrangement, may be placed in rthe spaces between the rims and ribs of the metallic table top.

Figs. 7 and 8 show the metaliic table top forming sheet Illa bent to form T-shaped ribs 12a welded at Ila. Fig. 8 shows the sheet IIb bent to form substantially cylindrical ribs I2b welded together at Mb..

In many instances preferred been described as rigidly connected by electric or spot welding, but it will be undexstoodiwt in many instances rivets or bolts may be preferred and that such will be within the scope of the invention described and claimed.

From theioregoins it will. oi course. be evident 'that the so-called rtable top may be supported by structures` haver' any mutable means whether permanently attached thereto or temporarily used asa support therefor.

What I claim is: l

1. A metallic table top formed from a metallic 4sheet bent 'to form depending tubular reinforc- 2. The structure defined in claim 1 in which said table top has a marginal depending flange' and in combination with leg-attaching plates vsaid depending ribs and ezt their ends rigidly united to the depending flanges oi' said tabletop..

EDWARD T. JOHN. 

